Differences between Heimdal and MIT Kerberos API

krb5_auth_con_getaddrs() H5l: If either of the pointers to local_addr and remote_addr is not NULL, it is freed first and then reallocated before being populated with the content of corresponding address from authentication context.
krb5_auth_con_setaddrs() H5l: If either address is NULL, the previous address remains in place
krb5_auth_con_setports() H5l: Not implemented as of version 1.3.3
krb5_auth_con_setrecvsubkey() H5l: If either port is NULL, the previous port remains in place
krb5_auth_con_setsendsubkey() H5l: Not implemented as of version 1.3.3
krb5_cc_set_config() MIT: Before version 1.10 it was assumed that the last argument data is ALWAYS non-zero.
krb5_cccol_last_change_time() MIT: not implemented
krb5_set_default_realm() H5l: Caches the computed default realm context field. If the second argument is NULL, it tries to retrieve it from libdefaults or DNS. MIT: Computes the default realm each time if it wasn’t explicitly set in the context